package com.tanhua.dubbo.api;

import com.tanhua.model.enums.CommentType;
import com.tanhua.model.mongo.Comment;
import com.tanhua.model.mongo.Movement;
import org.apache.dubbo.config.annotation.DubboService;
import org.bson.types.ObjectId;
import org.checkerframework.checker.units.qual.C;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Sort;
import org.springframework.data.mongodb.core.FindAndModifyOptions;
import org.springframework.data.mongodb.core.MongoTemplate;
import org.springframework.data.mongodb.core.query.Criteria;
import org.springframework.data.mongodb.core.query.Query;
import org.springframework.data.mongodb.core.query.Update;

import java.util.List;

@DubboService
public class CommentApiImpl implements CommentApi {

    @Autowired
    private MongoTemplate mongoTemplate;

    @Override
    public Integer save(Comment comment) {
        //查询动态
        Movement movement = mongoTemplate.findById(comment.getPublishId(), Movement.class);
        //设置被评论人属性
        if (movement != null) {
            comment.setPublishUserId(movement.getUserId());
        }
        //保存到数据库
        mongoTemplate.save(comment);
        //更新动态表中的对应字段
        Query query = Query.query(Criteria.where("id").is(comment.getPublishId()));
        Update update = new Update();
        if (comment.getCommentType() == CommentType.LIKE.getType()) {
            update.inc("likeCount", 1);
        } else if (comment.getCommentType() == CommentType.COMMENT.getType()) {
            update.inc("commentCount", 1);
        } else {
            update.inc("loveCount", 1);
        }
        //设置更新参数
        FindAndModifyOptions options = new FindAndModifyOptions();
        options.returnNew(true);
        Movement modify = mongoTemplate.findAndModify(query, update, options, Movement.class);
        //获取最新评论数量并返回
        return modify.statisCount(comment.getCommentType());
    }

    @Override
    public List<Comment> findComments(String movementId, CommentType commentType, Integer page, Integer pagesize) {
        Query query = Query.query(Criteria
                        .where("publishId").is(new ObjectId(movementId))
                        .and("commentType").is(commentType.getType()))
                .skip((page - 1) * pagesize)
                .limit(pagesize)
                .with(Sort.by(Sort.Order.desc("created")));
        //查询并返回
        return mongoTemplate.find(query, Comment.class);
    }

    /*
     * 判断点赞是否存在
     * */
    @Override
    public Boolean hasComment(String movementId, Long userId, CommentType commentType) {
        Criteria criteria = Criteria.where("userId").is(userId)
                .and("publishId").is(new ObjectId(movementId))
                .and("commentType").is(commentType.getType());
        Query query = Query.query(criteria);
        //判断数据是否存在
        return mongoTemplate.exists(query, Comment.class);
    }

    @Override
    public Integer delete(Comment comment) {
        //删除Comment
        Criteria criteria = Criteria.where("userId").is(comment.getUserId())
                .and("publishId").is(comment.getPublishId())
                .and("commentType").is(comment.getCommentType());
        Query query = Query.query(criteria);
        mongoTemplate.remove(query, Comment.class);
        //修改动态表中的总数量
        Query movementQuery = Query.query(Criteria.where("id").is(comment.getPublishId()));
        Update update = new Update();
        if (comment.getCommentType() == CommentType.LIKE.getType()) {
            update.inc("likeCount", -1);
        } else if (comment.getCommentType() == CommentType.COMMENT.getType()) {
            update.inc("commentCount", -1);
        } else {
            update.inc("loveCount", -1);
        }
        //设置更新参数
        FindAndModifyOptions options = new FindAndModifyOptions();
        options.returnNew(true);
        Movement modify = mongoTemplate.findAndModify(movementQuery, update, options, Movement.class);
        //获取最新评论数量并返回
        return modify.statisCount(comment.getCommentType());

    }

    @Override
    public Integer saveLikeComment(Comment comment) {
        //查询动态
        Comment comment1 = mongoTemplate.findById(comment.getPublishId(), Comment.class);
        //设置被评论人属性
        if (comment1 != null) {
            comment.setPublishUserId(comment1.getUserId());
        }
        //保存comment数据
        mongoTemplate.save(comment);
        //修改被点赞评论的数据
        Query query = Query.query(Criteria.where("id").is(comment.getPublishId()));
        Update update = new Update();
        update.inc("likeCount", 1);
        FindAndModifyOptions options = new FindAndModifyOptions();
        options.returnNew(true);
        Comment modify = mongoTemplate.findAndModify(query, update, options, Comment.class);
        //获取最新评论数量并返回
        return modify.getLikeCount();
    }

    @Override
    public Integer deleteLikeComment(Comment comment) {
        //删除点赞
        Criteria criteria = Criteria.where("userId").is(comment.getUserId())
                .and("publishId").is(comment.getPublishId())
                .and("commentType").is(comment.getCommentType());
        Query query = Query.query(criteria);
        mongoTemplate.remove(query, Comment.class);
        //获取被点赞的评论
        Criteria countCriteria = Criteria.where("id").is(comment.getPublishId());
        Query query1 = Query.query(countCriteria);
        //更新该评论的点赞数
        Update update = new Update();
        update.inc("likeCount",-1);
        FindAndModifyOptions options = new FindAndModifyOptions();
        options.returnNew(true);
        Comment modify = mongoTemplate.findAndModify(query1, update, options, Comment.class);
        //返回结果
        return modify.getLikeCount();
    }
}